Table 5. Effects of hrG-CSF (10 ng/mL) treatment duration on in vitro development of in vitro fertilization embryos.

Groups	No. of oocytes	No. (%) of embryos developed to		Blastocyst cell Number (N)
	cultured (3)*	≥ 2-cells (%)†	Blastocysts (%) †
control	81	57 (70.4)	12 (14.8)	54.8 ± 2.0(12)
Day 0 to 3	85	52 (61.3)	15 (17.7)	54.7 ± 1.8(15)
Day 4 to 7	82	53 (64.7)	15 (18.3)	52.1 ± 2.2(15)
Day 0 to 7	82	56 (68.4)	18 (22.0)	54.4 ± 0.3(18)

Values with different superscripts within the same column are significantly different (P < 0.05).

The data represent means ±SEM.

hrG-CSF: human recombinant granulocyte-colony stimulating factor.

* Number of replicates.

N Number of blastocysts examined.

† Percentage of total cultured oocytes.